Multiply the length by the width to arrive at.
How to figure square ft of a roof.
How to estimate roofing materials.
You will need to express this size in terms of square feet.
On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof.
To properly calculate how many bundles of shingles are needed to roof your home you need to calculate the total square footage of the roof and convert it to squares.
How to calculate square feet of a roof step 1.
Calculate each plane separately.
Link to your exact conversion.
1 ft x 1 ft.
Measure the length and width of every roof plane or surface.
A square simply refers to a 10 x 10 square of roofing.
In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area.
Convert the area to roofing squares.
Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material.
1 roofing square 9 290304 m 3.
100 square feet 1 roofing square 9 290304 cubic meters si unit.
8 inches and you have an 8 in 12 pitch.
Because each 100 square feet of roof is one roofing square divide.
However shingles are packaged in a way that they are light enough for the average person to carry around.
If this distance measures 4 inches you have a 4 in 12 pitch.
Measure the ground dimensions of the house using a tape measure and write down these dimensions.
As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.
A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.
How do you calculate square footage for a roof.
Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
Multiply the length and width of each square or rectangle shaped plane.
To find the squares divide the overall roof area by 100 and then round up.
Include dormers the small outjuttings over attic.
A square represents 100 square feet of area covered by shingles.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
Pitch measurement method 1.
This is simply 100 square feet of roof.
Singles are often sold in bundles with three bundles equaling one roof square.
The first step in a free roofing estimate is measuring the roof dimensions.
